Molding machine



Aug. 21, 1928,

E. o. BEARDSLEY El AL HOLDING ucnnu:

' 5 Sheets-Sheet 1 Original Filed July 9. 1921 Aug. 21, 1 928.

E O. BEARDSLE-Y ET AL MOLDING MACHINE Original Filed July 9. 1921 5 Sheets-Sheet 2 'Au 21, 192s 1,681,386

E. O. BEARDSLEY El AL MOLDING CHINE- Original Filed July 9. 19 1 5 Sheets-Sheet 3 Aug. 21, 1928. E. O. BEARDSLEY ET AL HOLDING IACHINB 5 Sheets-Sheet 4 Originpl Filed July 9. 1921 I mun 1mm- IHHIIHIHIIIM; (5;),

E. o. BEARDSLEY ET AL HOLDING CHINE Original Filed, July 9. 1921 I 5 sneets sheet 5 I; HillijllllllllllllllllllW llllllllllll lillllll lllll v///// 1 Patented Aug. 21, 192 8.

UNITED STATES PATENT OFFICE.

ELMEB O. BEARDSLEY, OF CHICAGO, AND WALTER F. PII'ER, 01 OAK PARK, ILLINOIS,

ASSIGNOBS TO THE BEARDSLEY & PIPER COMPANY, OF CHICAGO, ILLINOIS, A. COR- PORATION OF ILLINOIS.

MOLDING MACHINE.

Application filed July 9', 1921, Serial No. 483,385. Renewed January 12, 1928.

The invention relates to molding machines. In the practice of the inventions set forth in Letters Patent No. 1,309,833, dated July 15, 1919and No. 1,335,641, dated March 30,

p 1920, it has been found difiicult in some foundi comes possible to propel themachine to the I place in the foundry where the sand is treated and kept, to there load the machine with sufiicient sand to filla row of molds and then to return to the sand pile for another load. With such a structure, it is not necessary to provide a sand pile on the floor traversed by the machine and the invention makes it possible to use .a machine of the tractor type in foundries where the equipment does not permit of the use of sand on the floor traversed by the machine.

Other objects of the invention will appear from the specification.

The invention consists in the several novel features hereinafter set forth and more'particularly defined by claims at theconclusion hereof.

In the drawings: Fig. 1 is a side elevation of a machine embodying'the invention. Fig. 2 is a plan. Fig. 2 is a view of the reservoir bottom and its driving mechanism. Fig. 3 is a vertical section. Fig. 4 is a rear elevation. Fig. 5 is a section on line 55 of Fig. 1. Fig. 6 is a section taken on line 66 of Fig. Fig. 7 is a transverse section on line 77 of Fig. 3. Fig. 8 is a detail of thepawl and ratchet driving mechanism for the traction-Wheels.

I The several mechanisms of the machine are -4.5 mounted on a carriage comprising a frame 8 composed of sides rigidly secured together,

- carrying-wheels 9 and traction-wheels 10 adapted to run on rails 12 on the 11061 of the foundry. A molding machine 15 comprises a sand projector 60 at the outer end of a jib- 71 which is pivoted to an arm 72; which, in turn, is pivoted on a column 16 whlch is fixed to the truck frame. A motor '7 3 is adapted to drive the rotor of the projector 60 and a feed} endlesschain 20 and buckets 21 secured on the chain. Chain 20 passes around an overhead drivingssprocket 22 which is fixed to a shaft23 .whichis mounted in bearings 24 secured to the upper portion of the reservoir 18. The lower portion of the chain passes arounda sprocket 25 which is fixed to a hollow shaft 26.which is rovided with spiral conveyor blades 27 which are adapted to convey sand from the sides of a pile laterally to the buckets 21 of the elevator. Conveyor-shaft 26 is movably mounted in the lower ends of a pair of arms 28 which are pivoted, at 29, in brackets 30' which arefixed to the frame sides of the truck. The purpose in movably mounting "the conveyor shaft and the sprocket 25 thereon is tomake provision for lifting them to an elevated position above the foundry room floor after the reservoir 18 has been loaded with sand'and so that they will clear the floor under the truck frame. One ofthe supporting arms 28 is provided with a rack 31 with which meshes a worm 32 which is operable'by a hand-wheel 33 on a shaft which is mounted in bearings 34 on the upper end of one of the brackets 30. By rotating the hand-wheel 33, the lower portion of the elevator and the cross-conveyor may be raised into position shown by dotted lines in Figs. 1 and 3. An idler sprocket 35 is mounted on a stud 36 and is located so that the elevator chain 20 will be kept operative-and retained on the sprockets 25, 22 when the cross-conveyor and elevator are raised. This construction exemplifies mechanism by which the lower portion of the elevator and the cross-conveyor maybe raised and lowered, so the cross-con to be discharged from the reservoir and to into a pile of sand, so that the cross-conveyor will move the sand from the sides inwardly to the elevator and the elevator buckets will be filled while the elevator is being operated. The cross-conveyor and lower portion of the elevator may be adjusted to remove sand from different elevations of a pile or from piles of different heights.

An electric motor 38 is mounted on the truck and gearing is provided to drive the elevator and cross-conveyor from the motor. The shaft of the motor is provided with a pinion 39 which meshes with a gear 40 on a cross-shaft 41 which is mounted in bearings 42 secured to the truck-frame. A pinion 43 is slidable on, and secured to rotate with, shaft 41. A gear 44 on a shaft 45 which is mounted in a bearing 46 meshes with pinion 43. The mechanism for driving the loading mechanism comprises a sprocket 47 which is fixed to a shaft 45, a chain 48 driven by sprocket 47 and a sprocket 49 fixed to the outer end of the shaft 23 to which the upper elevator-sprocket 22 is secured. Pinion 43 is slidable into and out of engagement with gear-wheel 44 to render operative or inoperative the cross-conveyor and the sand loading mechanism, so that it may berendered operative while loading the reservoir 18 and inoperative when the machine is fillin molds or is in transit between the sand pile and the place where the flasks are placed.

A screen 51 is supported over the top of the reservoir 18 and is mounted in a frame i 52 which is movably supported by resilient bars 53 which have their upper ends secured to-said frame and their lower ends secured to the wall of said reservoir. This screen separates any castin or scrap from the sand and is vibrated by a ll-crank-lever 54 which is fulcrumed, at 55, pivoted to the screenframe 52, at 56, and is operated by a link 57, the lower end of which is pivoted to a wristpin 58 which rotates with gear 44. The screen 51 will sift the sand and separate the scrap or other material therefrom while the sand loading mechanism is being operated. I In practice, the loading mechanism and screen 51 will be conjointly operated adjacent a supply of sand until the reservoir contains a suflicient supply of sifted sand to fill a run of molds. The wrist-pin 58 for driving the sifting mechanism, being on gear 44, Wlll be rendered operative and inoperative with the loading mechanism. Opening formed in the reservoir 18 is closed by a. door 76 which may be opened to permit any excess of sand provide access to the inside of the reservoir.

The truck is adapted to be propelled at a highspeed between the sand-supply and the place where the flasks are filled by mechanism driven by power derived from the motor 38. This mechanism comprises a gear-wheel 77 secured to each traction-wheel 10, gearwheels 80. fixed to the ends of a cross-shaft 78, and meshing with the gears 77 respectively, a gear loose on shaft 78 and provided with clutch-teeth 86 which are adapted [0 drive a clutch-member 87 which is slidable on and fixed to rotate'with shaft 78 and pinion 88 which meshes with gear 85 and is fixed to, and constantly driven by, the shaft 41 which is driven by gears 40 and39. Motor 38 is of the reversible type so that the carriage ma be driven forwardly or backwardly, an the direction is controlled by the usual motor-switches (not shown) provided for such purpose. A lever 89 is adapted to shift clutch-member 87 into and out of operative connection with the teeth 86 of gear 85.to control the propulsion of the machine by the high speed driving mechanism.

Sand is delivered in regular quantity from the reservoir 18 to the chute 17 to keep the projector supplied with sand to fill the flasks in making molds. For this purpose, the bottom 98 of the reservoir 18, is rotatable and secured to a vertical shaft 99 which is mounted in an anti-friction bearing 100 on the carriage-frame and a deflector bar 101 directs the sand moved by the bottom through an opening 102 in one side of the reservoir 18. Bar 101 is fixedly secured in any suitable manner in the lower portion of the reservoir and is disposed so the sand urged against it by the rotating bottom 98 will be crowded laterally throu h opening 102 where the sand will be caught by the elevator-buckets 103 on an endless 'chain 104 which passes around a lowersprocket 105 Ion a shaft 106 and an upper sprocket 107 on a stud-shaft 108. The buckets 103 are adapted to discharge the sand into the chute 17 on the projector. Shaft108 is carried by a lever 109 which is pivoted to a bracket 110 fixed to the upper portion of the reservoir and to which a spring 111 is applied to act on the lever to keep the ele-' vator-chain 104 taut. Shaft 106 is connected to rotate the reservoir-bottom 98 by a pinion 112 which is fixed to said shaft and meshes with a ring-gear 113 which is fixed to the underside of said bottom. Shaft 106 is driven by a s rocket 114 which is loose on the hub of, an has a one-way clutch-connection 115 with, gear 85, a chain 116 driven by said sprocket and driving a sprocket 117 fixed on shaft 106. A 1ever118 is provided to shift sprocket 114 into and out of operative connection with gear 85. A spring 119 is applied to urge this lever into position to keep sprocket 117 in driving relation with gear 85 and a removable pin is adapted to lock the, lever in its alternative position. The oneway clutch 115 permits the carriage to be propelled in one direction at high speed without the necessity of locking lever 118 in said alternative position.

. While filhng flasks, it is desirable to propel the carriage slowly to bring the projector prises a cam 91 on the hub of the constantly driven gear 85, a lever 92 pivoted to the carriage-frame at 93, and provided with. a roller 94 riding on said hub and cam, a pawl 95 pivoted to, antl operated by, lever 92,, and a ratchet-wheel 96 which is integral with one of the gears 80, and is operated step-by-step by said pawl. This driving mechanism may be rendered inoperative by swinging the lever 92 out of operative relation with cam 91, which is desirable when the high-speed propelling mechanism is operative or when it is desired to operate the moldingmachine as a stationary machine.

In operation, the machine will be propelled at high-speed so the cross-conveyor and loading elevator-buckets will pass into a pile of sand. The driving mechanism for said conveyor and elevator will then be rendered operative to cause the elevator to lift the sand loading the reservoir, the cross-conveyor may be adjusted in the pile of sand and will serve to fill the buckets. During this loading operation, the propelling mechanism and the mechanism for delivering sand from the reservoir to the projector will be idle. The operation of the loading apparatus Wlll be continued until the requisite quantity of sand has. been sifted and delivered into the reservoir 18. Then, pinion 43 is disconnected from gear 44 to render the loading mechanism inoperative and clutch 86, 87 will be rendered operative so the carriage will be propelled at the high speed by its driving mechanism to the place where arow of flasks to be filled have been placed alongside of the track, and then said mechanism will be rendered inoperative by shifting lever'89 to disconnect clutch 87, 86. Next, lever 118 is then released to permit spring 119 to retain the 'clutch 115 operative, the lever 92 will be swung into operative relation "with cam '91,

and pawl 95 placed into operative relation with ratchet-wheel 96. The rotatable bottom 98 will then be'driven to discharge sand through opening 102 into the elevator-buckets 103 which will be driven while the bottom is rotating and will elevate .regular quantities of sand anddischarge it into and keep the chute 17 supplied withsand for delivery .to the projector by the 'conveyor belt 74.

The operator will move the projector which is operated to operate pawl to step up ratchet-wheel 96 so that the machine will be and sand-feeding mechanism are operated to bring the projector within range ofthe successive flasks in one or 'more rows along the track.

When all of the load of sandin the reservoir has been used in the projector, the drivreservoir on the carriage and to feed the sand 5 from the reservoir to the machine for filling flasks on the molding room flo r until theentire load has been projected in o the flasks.

The invention is not to be understood as restricted to the details set forth, since these may bemodified within the scope of the appended claims, without departing from the spirit and scope of the invention.

ters Patent, is:

founding, the combinationofa movable carriage, a machine for filling flasks mounted on "thecarriage, a sandreservoir on the carriage adapted to'retain suflicient sand for a run of flasks, mechanism for feeding sand from the reservoir to the filling machine and driving mechanism for said sand feeding mechanism. r 2. In a machine for making molds for founding, the combination of a movable carriage, a machine mounted on the carriage for filling flasks, a sand reservoir on the carriage of suflicient capacity to retain sand for a run of flasks, mechanism on the carriage for loading sand from a pile into the reservoir, and mechanism operable separately from the loading mechanism .for feeding sand from the reservoir to the flask filling machine.

3. In a machine for making, molds for founding, the combination of a movable carriage, a machine, mounted on: the carriage, for filling flasks, a sand reservoir on the can.

; riage ofsuflicient' capacity for a run of flasks,

mechanism on the carriage for loading sand into the reservoir from a pile, means for feed- Having thus describedthe invention, what we claim as new and desire to secure by 'Let- 1 1. In a machine for making molds for ing sand from the reservoir to the filling machine, and mechanisms for separately drivin the loading mechanism and the sand fee mechanism so they maybe independently operated.

4. In a machine for making moldsfor,

founding-the combination of. a movable can-S riage, a machine for filling flasks mounted on; the carriage, a sand-reservoir-onthe carriage,

and mechanism on the carriage for loading sand from a .pile'intothe reservoir, comprising an elevator and a cross-conveyor o5 automatically propelled while theprojector, a machine for making molds for founding, the combination of a movable car-. riage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage adapted to retain sufiicient sand to fill a run of flasks, propelling mechanism on and for the carriage, mechanism for feeding sand from the reservoir to the filling machine and driving mechanism for said, feed means.

6. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage of sufficient capacity to hold sand for a run of flasks, propelling mechanism on and for the carriage, and mechanism on the carriage for loading sand from a pile into the reservoir.

7. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage of suiiicient capacity to hold sand for a run of. flasks, propelling mechanism on and for the carriage, mechanism on the carriage for loading sand from a pile into the reservoir, and means operable independently of the loading mechanism for' feeding sand from the reservoir to the filling machine.

8. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage of suflicient capacity to hold sand for a run offlasks, propelling mechanism on and for the carriage mechanism for feeding sand from the reservoir to the filling machine, and mechanism on the carriage, operable independently of the sand feed mechanism for loading sand from a pile into the reservoir, comprising an elevator and a cross-conveyor.

9. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage of sufficient capacity to hold sand for a run of flasks, mechanism on the carriage for loading sand from a pile into the reservoir and mechanism for raising and lowering the loading mechanism.

10. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage, an elevator on the carriage for delivering sand into the reservoir, and means for raising and lowering the lower portion of the elevator.

11. In a machine for making molds for founding, the combination of a. movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage, a cross-conveyor and an elevator for sand, and means for raising and lowerin the cross-conveyor and the lower portion 0 the elevator.

12. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage, a cross-conveyor and an elevator for sand, and means for raising and lowering the cross-conveyor and the lower portion of the elevator, comprising pivoted arms.

13. In a machine for making molds for founding. the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage of sufficient capacity to retain a supply of sand for a run of flasks, propelling mechanism on and for the carriage, mechanl'llSIl'l on the carriage for loading sand from a pile into the reservoir, and mechanism for raising and lowering the loading mechanism.

14. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage, propelling mechanism on and for the carriage, an elevator on the carriage for delivering sand into the reservoir and means for raising and lowering the lower portion of the elevator.

1:). In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage. a sand-reservoir on the carriage, propelling mechanism on and for the carriage, a cross-conveyor and an elevator for sand, and means for raising and lowering the cross-conveyor and the lower portion of the elevator.

16. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand reservoir on the carriage, 'mechanism for loading sand into the reservoir, a screen for the sand in transit to the reservoir to which the sand is delivered by the loading mechanism, and mechanism on the carriage for driving the loading mechanism and operating the screen.

17. In a machine for making molds for founding, the combination of a. movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage, mechanism. for loading sand into the reservoir,, a screen for the sand in transit to the reservoir, mechanism on the carriage for driving the loading mechanism and operating the screen, and means for con'ointly controlling the operation of the loa ing mechanism and the screen.

18. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage,"a sand-reservoir on the carriage, a screen over the reservoir, an elevator for delivering sand into the screen and mechanism for operating the screen.

19. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage, mechanism to feed sand from the bottom of the reservoirto the filling machine and dri ing mechanism for said feed mechanism.

20. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on founding, the combination of a movable carrage, a machine for filling flasks mounted on the carriage, a sand reservoir on the carriage, said reservoir having an opening in its side adjacent its bottom, and an elevator for feeding sand from said opening to said filling machine. I

23. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage,

said reservoir having an opening in its side and a movable bottom to discharge sand through said opening, and means to feed sand discharged through the opening to the filling machine.

24. In a machine for making molds for founding, the combination of a mova le carriage, a machine for filling flasks mounted on the carriage, a sand-reservoir on the carriage, and an elevator for delivering sand from the reservoir to the filling machine.

25. In apparatus of the character described, the combination of a carriage, a sand-reservoir on the carriage, mechanism on and for propelling the carriage, mechanism for feed' ing sand from the reservoir for use in a filling machine and mechanism for driving said feed. mechanism.

' 26. In apparatus of the character described,

' v the combination of a carriage, a sand-reservoir on the earriage, mechanism on and for propelling t 'e' carriage, mechanism for load'- mg sand from a pile into the reservoir, mecha- Y nism' for feeding sand from the reservoir for use in a filling machine and mechanism for driving said feed mechanism.

27. In apparatus of the character described, the combination of a carriage, a sandreservoir on the carriage, mechanism on and for propelling the carriage, andan elevator for feeding sand from the bottom' of the reservoir to a filling machine.

28. In apparatus of the diam t r d? scribed, the combination of a carriage, a sandreservoir on the carriage, mechanism on and for propelling the carriage, a screen over the reservoir through'which the sand is delivered into the reservoir, and mechanism for feeding sand from the reservoir for use in a filling machine. 1

29. In apparatus of the. character described, the combination of a carriage, areservoir on the carriage, a movable bottom for the reservoir, mechanism for operating the bottom, and means to feed sand from the bot-- tom to'a filling machine.

30. In apparatus of the character described, the'combination of a carriage, a reservoir on the carriage, a movable bottom for the reservo1r, mechanism for operating the hottom, and an elevator to feed sandfrom the 7' bottom of the reservoir to a filling machine.

31. In apparatus of the character described, the combination of a carriage, areservoir on the carriage, a rotatable bottomfor the reservoir, an elevator to feed sand from the bottom for use in a filling machine, and mechanism for operating the bottom and to drive the elevator.

32. In apparatus of the character described, the combination of a carriage, a sand reservoir on the carriage of suflicient capacity to retain a supply of sand for a run of molds, mechanism to feed sand from the reservoir for use in a filling machine comprising a motor and gearing driven thereby, and mechanism on the carriage forpropelling it.

33. In a machine for making molds for founding, the combination-of a movable carriage, a machine for filling flasks mounted on.

the carriage, a sand-reservoir on the carriage, means to feed sand from the reservoir to the filling machine, mechanism comprising a motor on the carriage to propel it, while the feed-means is in operation to'bring the filling machine into position to successively '34. In a machine for making molds for founding, the combination of a movable carriage, a machine for filling flasks mounted on the carriage, a, sand-reservoir on the carriage means. tofeed sand from the reservoir to the filling machine, mechanism to propel the'carriage While the feed-means is in operation to bring the filling machine into position to successively fill flasks, and high-speed mechanism to propel the carriage When the filling machine is not in operation.

35. In a machine for making molds, the combination of a movable carriage, a rotary sand projector mounted-on the carriage, a reservoir for sand on the carriage, mechanism to drive the projector, and means tofeed sand from the reservoir to the projector.

36. In a machine for making molds, the combination of a movable carriage, a rotary sand projector mounted on the carriage, a

to drive the projector, mechanism to propel the carriage, and means to feed sand from the reservoir to the projector.

37. In a machine for making molds, the 5 combination of a movable carriage, a rotary sand projector mounted on the carriage, a reservoirfor sand on the carriage, mechanism to drive the projector, mechanism to load the reservoir, and means to feed sand from the w reservoir to the projector.

38. In a machine for making molds, the combination of a movable carriage, a rotary sand projector mounted on the carriage, a reservoir for sand on the carriage, mechanism to drive the projector, an elevator to load sand 15 from a pile into the reservoir, and means to feed sand from the reservoir to the projector.

ELMER O. BEAR-DSLEY. WALTER F. PIPER. 

